The Screw,shoulder, cataloged under National Stock Number 5305-00-769-5580, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mkt Geotechnical Systems. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-769-5580 |
| Primary Part Number | 13581 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Mkt Geotechnical Systems |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Quantity Per Inch | 20 |
| Countersink Angle | 90.0 DEGREES NOMINAL |
| Width Across Flats | 0.190 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Thread Class | 3A A |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Fastener Length | 0.875 INCHES NOMINAL IN |
| Shoulder Diameter | 0.438 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.781 INCHES NOMINAL IN |
| Head Height | 0.095 INCHES NOMINAL IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Internal Drive Style | HEXAGON |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Direction | RIGHT-HAND |
| Material | STEEL COMP 303 OVERALL |
| Shoulder Length | 0.264 INCHES NOMINAL FIRST SHOULDER IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 13581 | Mkt Geotechnical Systems (USA) |
NSN 5305-00-769-5580 is a Screw,shoulder, manufactured by Mkt Geotechnical Systems, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-769-5580 has 1 cross-referenced part number: 13581 (Mkt Geotechnical Systems).
There are 7 known substitutes for 5305-00-769-5580: 4820-00-036-1537, 5930-00-117-6165, 5999-00-324-8887 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 13581: Nominal Thread Diameter: 0.250 INCHES IN; Thread Quantity Per Inch: 20; Countersink Angle: 90.0 DEGREES NOMINAL; Width Across Flats: 0.190 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.